Hi Mike, I've looked long and hard look at the G5 lcd LM171W02 (A4) (M1) that Is now working in my isight G5 imac - without any problems swapping the inverter needed for the isight unit and video cable - and I don't see any pixel line at the bottom of the screen that is blank or not any colour that it isn't supposed to be regardless what background or screensaver is active.? Maybe just an anomaly. Regards..